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A Honda K24A Engine with i-VTEC. VTEC (described as Variable Valve Timing & Lift Electronic Control, but stands for Valve Timing Electronically Controlled) is a system developed by Honda to improve the volumetric efficiency of a four-stroke internal combustion engine, resulting in higher performance at high RPM, and lower fuel consumption at low RPM.
The inlet camshaft position is advanced 25 degrees, thus increasing valve overlap. It remains in this advanced state until about 5000 rpm when the solenoid switches off, and the variator piston returns the valve timing to its natural state. The variable timing increases the engine's mid-range flexibility and reduces emissions.
Cylinder head of Honda K20Z3.This engine uses continuously variable timing for the inlet valves. Variable valve timing (VVT) is the process of altering the timing of a valve lift event in an internal combustion engine, and is often used to improve performance, fuel economy or emissions.
1996-1997 Honda Civic VTi (Philippines, with engine code as PH16A) 1998-2000 Honda Civic VTi (Philippines, with engine code as P6FD1 for Manual Transmission and P6FD6 for Automatic S4PA Transmission) Rod Length: 137 mm; Rod/Stroke: 1.52; Compression: 9.4:1; Power: 115 hp (86 kW; 117 PS) at 5600 rpm; Torque: 104 lb⋅ft (141 N⋅m) at 4500 rpm
For twin-cam or DOHC engines, VCT was used on either the intake or exhaust camshaft. (Engines that have VCT on both camshafts are now designated as Ti-VCT.↓) The use of variable camshaft timing on the exhaust camshaft is for improved emissions, and vehicles with VCT on the exhaust camshaft do not require exhaust gas recirculation (EGR) as retarding the exhaust cam timing achieves the same ...
Two versions of the Honda i-VTEC system can be found on a K-series engine, and both versions can come with variable timing control (VTC) on the intake cam. The VTEC system on engines like the K20A3 only operate on the intake cam; at low rpm only one intake valve is fully opened, the other opening just slightly to create a swirl effect in the ...
Variable valve lift (VVL) is an automotive piston engine technology which varies the height a valve opens in order to improve performance, fuel economy or emissions. There are two main types of VVL: discrete, which employs fixed valve lift amounts, and continuous, which is able to vary the amount of lift.
Honda's F20C Engine won a spot on Wards' 10 Best Engines List twice, in 2000 and 2001. The engine displaces 2.0 L; 121.9 cu in (1,997 cc), lending to the Honda S2000's name. This method of naming follows suit with the rest of the Honda S roadsters (i.e. Honda S500 , S600 , and S800 ).